Answer:
The most important feature of classical Greek religion was the sacrifice, which was performed outside temples or shrines dedicated to particular deities.
Ancient Greek religion was polytheistic.
The gods combined supernatural and human characteristics, and no god was either wholly good or wholly bad.
Ritual was a central part of both public and private life.
Explanation:
Central ideas are the main points the author of a text is making. When you're trying to select statements that may be considered the central ideas, you should avoid the ones that contain too much detail.
The first four excerpts state central ideas as they are about important aspects of the classical Greek religion that need to be known in order to understand it. The last two are simply details about particular gods. They make the text more interesting, but can't be considered the main points.
